Question

Today in an interview (junior web developer) the interviewer asked me this question:

How you can execute a Method when you have its name as a string ( in
javascript and in C# )

I can not answer 🙁

Now when I searched I found this question How to execute a JavaScript function when I have its name as a string

but how do this in c# ??

Answer 1

If you just have name of the method than you can make use of .net Relfection only to run that method..

Check : MethodBase.Invoke Method (Object, Object[])

or

Example :

class Class1
   {
    public int AddNumb(int numb1, int numb2)
    {
      int ans = numb1 + numb2;
      return ans;
    }

  [STAThread]
  static void Main(string[] args)
  {
     Type type1 = typeof(Class1); 
     //Create an instance of the type
     object obj = Activator.CreateInstance(type1);
     object[] mParam = new object[] {5, 10};
     //invoke AddMethod, passing in two parameters
     int res = (int)type1.InvokeMember("AddNumb", BindingFlags.InvokeMethod,
                                        null, obj, mParam);
     Console.Write("Result: {0} \n", res);
   }
  }